two said:
One thing that's been mentioned about psionics, which is rather a subtle point in all of its ramifications, is the "1-2 fight a day power point full force everything all out crazy attack" scenarios.
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Point is, however -- it's kind of tough on the GM to always insure this sort of thing. In fact, it's near impossible.
If you are in a dungeon setting -- it's easy. 3-4 fights are guaranteed pretty much before a rest. Psionic types are balanced.
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Looking back on it, I'd say a good 75% of my battles in the last year were of the 1-2 in a day variety. And it was pretty clear they were going to be the only battles that day, barring a very unexpected incident.
This isn't a big deal at all with magic-using PC's. They can't increase their power output quickly and freely.
Psionic-types can, and do.
It's a rather "hidden" advantage that I would be wary of. It might force you, as a GM, to change the way you set up encounters and play the game.
If you do a lot of "one big battle a day" encounters -- the psionicists are going to look, feel, and act very powerful.
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This is the exact problem I had. Aside from nerfing a few individual powers (the
energy chain,
mind thrust, and
ego whip) what I did was adapt the Unearthed Arcana "Exhausting Magic" variant to psionics. So if they blow through power points too quickly they become fatugued, and then exhausted, sometimes over the course of a single battle. On the other hand, psionic characters are a bit more flexible in how they regain their power points, and they have a "sweet spot" between one-half and two-thirds of their maximum where they can manifest occasional powers with effectively no power point cost.
No new rule sub-system like psionics is going to force me to change my DMing style for no other reason. Not going to happen, and that's what psionics was threatening to do.
The no-components-ever thing, and the additional ability to easily suppress even the displays, also drives me batty. Half the time I have a hard time justifying opponents' use of standard anti-spellcaster tactics against my psions because they just find a convenient rock and stand behind it. Short of process of elimination, it's not easy to tell where these effects are coming from.
And don't get me started on invisible/well-hidden psions. Humph.
(Note: Did not read the whole thread. Sorry if you've seen this already.)
EDIT: Did a little more reading. Nail, you asked about epic psions? Unfortunately, they actually get an extra helping of cheese, continuing to learn powers as part of their normal progression (unlike their sorcerous brethren) in exchange for an advanatage no other spellcaster receives either. The 30th-level psion (cosntructor, aargh) in a PbP game I'm in has 54 powers, plus one from Epic Expanded Knowledge and 3 more that he learned by paying NPC psion's to use
psychic chirurgury on him. I would pity a Sorcerer, if we had one.
(As it was, he took issue with my Bard using spell points instead of slots, "because it made him feel less unique" and "took away a major advantage" of the psion.

But that's neither here nor there.)